2026. Mineralogical Characterization of Potassium-Bearing Clay Minerals and Their Implications on K Availability in Calcareous Soils of Sulaymaniyah, Kurdistan: Mineralogical Characterization of Potassium-Bearing Clay Minerals and Their Implications on K Availability in Calcareous Soils. Academic Journal of International University of Erbil. 3, 2 (Apr. 2026), 1120–1128. DOI:https://doi.org/10.63841/iue3261120.